nataliebyrd
nataliebyrd nataliebyrd
  • 23-05-2023
  • Mathematics
contestada

Solve by using multiplication with the addition-or-subtraction method.

4x - 5y = 0
8x + 5y = -6

Respuesta :

phuchoang
phuchoang phuchoang
  • 23-05-2023

Answer:

x = -0.25

y = -0.5

Step-by-step explanation:

4x - 5y = 0

8x + 5y = -6

We multiply the first equation by -2

-8x + 10y = 0

8x + 5y = -6

15y = -6

y = -6/15 = -2/5 = -0.4

Now we put -0.4 in for y and solve for x

8x + 5(-0.4) = -6

-8x - 2 = -6

-8x = -4

x = -1/2 = -0.5

Let's Check the answer.

4(-0.5) - 5(-0.4) = 0

-2 + 2 = 0

0 = 0

So, x = -0.5 and y = -0.4 is the correct answer.

Answer Link

Otras preguntas

What was the goal of Asian American activists who participated in the strike at San Francisco State College? to overthrow Earl Warren to establish ethnic studie
PLEASE HELPPP I HAV EFIVE MINUTESS
Caracteristicas de las obras de Diego Rivera
Will Mark Brainlest help step by step. (The ratio of two men present age is 3:4 and this will be 7:9 after 4 years what are their present age)​
what is substances in scientific methods​
Look the photo plz help me asap i will give brainliest
For two consecutive numbers, five times the number that is 3 more than four timse the greater number. What are the numbers?
list 5 procedures done in nail preppingneed help༼ つ ◕_◕ ༽つ
Plz help me solve this algebra
20 POINTS!! What words best described the Time Traveller’s physical experience in The Time Machine? A. Nauseous and dazzled B. Excited and joyous C. Distracted